I'm confused about the NodeBalancer plan. What's the maximum traffic allowed for it?

I'm planning to setup around 7 servers for my mobile app, the setup probably looks like this:

NLB x 1
app server x 2 (running apache+php)
memcached server x 2
mysql server x 2

except NLB, all other servers should just use private network and won't communicate with public internet. So if all other 6 servers are from the $20 plan (3TB for each), I'll have 21TB traffic allowed?

I've heard all the traffic quota for my linodes will be combined as a "pool", does it mean I don't really care the traffic volume on individual machine as long as the total internet traffic from all my servers doesn't pass the total quota?

Thanks.

Yes.

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/ Peter

I don't think nodebalancers get their own traffic quota (it's load balancer entries in network hardware, not another linode), so you'd get 3TB*6=18TB, not 21TB.